2021-31799 | RDoc Filename Privilege Escalation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.23

A vulnerability, which was classified as problematic, has been found in RDoc up to 6.3.0. This issue affects an unknown part of the component Filename Handler. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute arbitrary code via | and tags in a filename.

The weakness was disclosed 07/30/2021. The advisory is shared at security-tracker.debian.org. The identification of this vulnerability is CVE-2021-31799 since 04/25/2021. The attack needs to be done within the local network. A simple authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 6.3.1 eliminates this vulnerability.

Name

• RDoc

• 🔒
• 🔒
• 🔒

• 🔒
• 🔒
• 🔒

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

AV	AC	Au	C	I	A
🔍	🔍	🔍	🔍	🔍	🔍
🔍	🔍	🔍	🔍	🔍	🔍
🔍	🔍	🔍	🔍	🔍	🔍

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Unknown
CWE: Unknown
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: RDoc 6.3.1

04/25/2021 CVE assigned
07/30/2021 +96 days Advisory disclosed
07/30/2021 +0 days VulDB entry created
08/06/2021 +6 days VulDB last updateAdvisory: security-tracker.debian.org
Status: Confirmed

CVE: CVE-2021-31799 (🔒)

Created: 07/30/2021 19:51
Updated: 08/06/2021 01:26
Changes: (2) source_cve_assigned source_cve_nvd_summary
Complete: 🔍

Comments

Download the whitepaper to learn more about our service!